text: /*
   * QEMU 8259 - internal interfaces
   *
   * Copyright (c) 2011 Jan Kiszka, Siemens AG
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  #ifndef QEMU_I8259_INTERNAL_H
  #define QEMU_I8259_INTERNAL_H
  
  #include "hw/hw.h"
  #include "hw/i386/pc.h"
  #include "hw/isa/isa.h"
  
  typedef struct PICCommonState PICCommonState;
  
  #define TYPE_PIC_COMMON "pic-common"
  #define PIC_COMMON(obj) \
       OBJECT_CHECK(PICCommonState, (obj), TYPE_PIC_COMMON)
  #define PIC_COMMON_CLASS(klass) \
       OBJECT_CLASS_CHECK(PICCommonClass, (klass), TYPE_PIC_COMMON)
  #define PIC_COMMON_GET_CLASS(obj) \
       OBJECT_GET_CLASS(PICCommonClass, (obj), TYPE_PIC_COMMON)
  
  typedef struct PICCommonClass
  {
      ISADeviceClass parent_class;
  
      void (*pre_save)(PICCommonState *s);
      void (*post_load)(PICCommonState *s);
  } PICCommonClass;
  
  struct PICCommonState {
      ISADevice parent_obj;
  
      uint8_t last_irr; /* edge detection */
      uint8_t irr; /* interrupt request register */
      uint8_t imr; /* interrupt mask register */
      uint8_t isr; /* interrupt service register */
      uint8_t priority_add; /* highest irq priority */
      uint8_t irq_base;
      uint8_t read_reg_select;
      uint8_t poll;
      uint8_t special_mask;
      uint8_t init_state;
      uint8_t auto_eoi;
      uint8_t rotate_on_auto_eoi;
      uint8_t special_fully_nested_mode;
      uint8_t init4; /* true if 4 byte init */
      uint8_t single_mode; /* true if slave pic is not initialized */
      uint8_t elcr; /* PIIX edge/trigger selection*/
      uint8_t elcr_mask;
      qemu_irq int_out[1];
      uint32_t master; /* reflects /SP input pin */
      uint32_t iobase;
      uint32_t elcr_addr;
      MemoryRegion base_io;
      MemoryRegion elcr_io;
  };
  
  void pic_reset_common(PICCommonState *s);
  
  ISADevice *i8259_init_chip(const char *name, ISABus *bus, bool master);
  
  
  #endif /* !QEMU_I8259_INTERNAL_H */
  